Matthew Sims / mbed

Lab 1 Program C

Dependents:   Lab1C

Fork of mbed by -deleted-

Diff: DigitalIn.h

Revision:
18:b3c9f16cbb96
Parent:
11:1c1ebd0324fa
Child:
19:e6be4cd80aad
--- a/DigitalIn.h	Tue Dec 01 14:24:15 2009 +0000
+++ b/DigitalIn.h	Mon May 17 14:18:54 2010 +0000
@@ -53,7 +53,10 @@
      *  returns - An integer representing the state of the input pin, 
      *      0 for logical 0 and 1 for logical 1
      */
-    int read();
+    int read() {
+        return ((_gpio->FIOPIN & _mask) ? 1 : 0);
+    }
+
 
     /* Function: mode
      *  Set the input pin mode
@@ -67,7 +70,10 @@
     /* Function: operator int()
      *  An operator shorthand for <read()>
      */
-    operator int();
+    operator int() {
+        return read();
+    }
+
 #endif
 
 #ifdef MBED_RPC
@@ -77,7 +83,9 @@
 
 protected:
 
-    PinName _pin;
+    PinName             _pin;
+    LPC_GPIO_TypeDef    *_gpio;
+    uint32_t            _mask;
 
 };